I think the problem has to do with how the search is set up. Numeric searches are handled differently.

The thing is _WHY_ not just link to the jump.cgi?? If you are searching for an ID, you'll only have one match anyway, so you might as well just link to it if it exists. It's a lot simpler, and has the same effect.

http://www.postcards.com
FAQ: http://www.postcards.com/FAQ/LinkSQL/